255715402 has 8 divisors (see below), whose sum is σ = 384200676. Its totient is φ = 127648512.

The previous prime is 255715321. The next prime is 255715459. The reversal of 255715402 is 204517552.

It can be written as a sum of positive squares in 2 ways, for example, as 193794241 + 61921161 = 13921^2 + 7869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103063 + ... + 105514.

Almost surely, 2^255715402 is an apocalyptic number.

255715402 is a deficient number, since it is larger than the sum of its proper divisors (128485274).

255715402 is a wasteful number, since it uses less digits than its factorization.

255715402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209192.

The product of its (nonzero) digits is 14000, while the sum is 31.

The square root of 255715402 is about 15991.1038393227. The cubic root of 255715402 is about 634.7250360576.

The spelling of 255715402 in words is "two hundred fifty-five million, seven hundred fifteen thousand, four hundred two".